Presidential Succession Act of 2003 - Revises provisions concerning presidential succession. Requires the President to submit to: (1) the Clerk of the House of Representatives notification in writing of the designation of either the Speaker of the House of Representatives or the office of the Minority Leader of the House as the office designated as the highest on the presidential succession list; and (2) the Secretary of the Senate notification in writing of the designation of either the Office of the Majority Leader of the Senate or the office of the Minority Leader of the Senate as next highest on such list.
Includes, following the Attorney General, the Secretary of Homeland Security on the list.